How do I find emails from 2018 on my iCloud?
How to find emails from 2018
[Re-Titled by Moderator]
On iCloud.com the only way would be to scroll through the email list until you reach 2018.
More more email sorting controls and searching, you will want to use an actual Email client with date searching features.
The default Apple Mail App on iPhones, iPads and Macs offers Date search.